Enable platform echo cancellation through the AudioRecord path.

media/audio/audio_parameters.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/audio/audio_parameters.h"
 
 #include "base/logging.h"
 #include "media/base/limits.h"
 
 namespace media {
 
 AudioParameters::AudioParameters()
     : format_(AUDIO_PCM_LINEAR),
       channel_layout_(CHANNEL_LAYOUT_NONE),
       sample_rate_(0),
       bits_per_sample_(0),
       frames_per_buffer_(0),
       channels_(0),
-      input_channels_(0) {
+      input_channels_(0),
+      effects_(NO_EFFECTS) {
 }
 
 AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
                                  int sample_rate, int bits_per_sample,
                                  int frames_per_buffer)
     : format_(format),
       channel_layout_(channel_layout),
       sample_rate_(sample_rate),
       bits_per_sample_(bits_per_sample),
       frames_per_buffer_(frames_per_buffer),
       channels_(ChannelLayoutToChannelCount(channel_layout)),
-      input_channels_(0) {
+      input_channels_(0),
+      effects_(NO_EFFECTS) {
 }
 
 AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
                                  int input_channels,
                                  int sample_rate, int bits_per_sample,
-                                 int frames_per_buffer)
+                                 int frames_per_buffer, int effects)
     : format_(format),
       channel_layout_(channel_layout),
       sample_rate_(sample_rate),
       bits_per_sample_(bits_per_sample),
       frames_per_buffer_(frames_per_buffer),
       channels_(ChannelLayoutToChannelCount(channel_layout)),
-      input_channels_(input_channels) {
+      input_channels_(input_channels),
+      effects_(effects) {
+}
+
+AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
+                                 int channels, int input_channels,
+                                 int sample_rate, int bits_per_sample,
+                                 int frames_per_buffer, int effects)
+    : format_(format),
+      channel_layout_(channel_layout),
+      sample_rate_(sample_rate),
+      bits_per_sample_(bits_per_sample),
+      frames_per_buffer_(frames_per_buffer),
+      channels_(channels),
+      input_channels_(input_channels),
+      effects_(effects) {
+  if (channel_layout != CHANNEL_LAYOUT_DISCRETE)
+    DCHECK_EQ(channels, ChannelLayoutToChannelCount(channel_layout));
 }
 
 void AudioParameters::Reset(Format format, ChannelLayout channel_layout,
                             int channels, int input_channels,
                             int sample_rate, int bits_per_sample,
                             int frames_per_buffer) {
   if (channel_layout != CHANNEL_LAYOUT_DISCRETE)
     DCHECK_EQ(channels, ChannelLayoutToChannelCount(channel_layout));
 
   format_ = format;
@@ skipping 33 matching lines @@
 int AudioParameters::GetBytesPerFrame() const {
   return channels_ * bits_per_sample_ / 8;
 }
 
 base::TimeDelta AudioParameters::GetBufferDuration() const {
   return base::TimeDelta::FromMicroseconds(
       frames_per_buffer_ * base::Time::kMicrosecondsPerSecond /
       static_cast<float>(sample_rate_));
 }
 
-void AudioParameters::SetDiscreteChannels(int channels) {
-  channel_layout_ = CHANNEL_LAYOUT_DISCRETE;
-  channels_ = channels;
-}
-
 }  // namespace media